Python0xA63

Python0xA63 is a lightweight, Python-inspired programming language and reference interpreter designed for education, scripting, and secure sandboxed execution. Developed by the Open Hex Software Project, it was released as an experimental language intended to illustrate language design and safe execution in a compact runtime. The name echoes hexadecimal versioning used to mark feature flags rather than conventional version numbers.

The design goals of Python0xA63 include readability, a small and portable runtime, and safe execution across platforms such as Windows, macOS, Linux, and certain embedded environments. It implements a restricted subset of Python-like syntax with a compact standard library, prioritizing a predictable and auditable execution model over full compatibility with CPython.

Syntax and semantics follow indentation-based blocks similar to Python. The language supports functions, classes with basic inheritance, control flow constructs, and common data structures such as lists, dictionaries, and sets. Numeric literals commonly use hexadecimal notation (for example, 0x1F) as part of the language’s heritage, though decimal literals remain supported. Optional static typing is available through type hints, and the runtime can perform lightweight type checks for modules that opt in to it. Dynamic features are deliberately limited to reduce risks in sandboxed contexts.

Implementation and ecosystem: the reference implementation is written in a systems-friendly language and aims for a small binary footprint with a focused runtime. It includes a built-in sandbox that enforces CPU time, memory usage, and restricted system calls, making it suitable for teaching environments and secure scripting tasks. The project is open source under a permissive license, with a focused standard library and community contributions aimed at education and experimentation.